SIFT BEARING STORE CATALOG

389/383ATimkenTapered Roller

389/383A is a Timken tapered roller bearing, bore 55.58 mm, O.D. 100 mm, width 21.95 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d55.58mm
Outside dia. D100mm
Width B21.95mm
Dynamic Cr108kN
Static C0r107kN
Weight0.69kg
Cr / C0r1.01
Mean dia. dm77.8mm

Original catalogue drawing - Timken TRB Catalog, page 218

389/383A Timken Tapered Roller bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D100 mmBore d55.58 mmWidth B21.95 mmCup width C17.83 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter55.5752.188
DOutside diameter1003.937
BInner-ring / bearing width21.9460.864
TOverall assembly width20.980.826
CCup / outer-ring width17.8260.7018
rChamfer (min)20.0787

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)55.575
Bore d (in)2.1880
Outside dia. D (mm)100.000
Outside dia. D (in)3.9370
Width B (mm)21.946
Overall width T (mm)20.980
Overall width T (in)0.8268
Cup width C (mm)17.826

Load ratings & speeds

Basic dynamic load rating Cr (lbs)24200
Basic static load rating Cor (lbs)24100
Basic dynamic load rating Cr (N)108000
Basic static load rating C0r (N)107000
Dynamic rating C1 (N, ISO)108000
Dynamic rating C1 (lbf, ISO)24200
Radial rating C90 (N)28000
Radial rating C90 (lbf)6280
Thrust rating Ca90 (N)16900
Thrust rating Ca90 (lbf)3810
Static rating C0 (N)107000
Static rating C0 (lbf)24100
Factor e0.35
Factor Y1.69
Factor K1.65
Geometry factor G142.0
Geometry factor G215.7
Geometry factor Cg0.0859
Effective load centre a (mm)-3.0

Weight

Weight (kg)0.69

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)2.3
Housing fillet r max (mm)2.0
Shaft shoulder da (mm)61.0
Shaft shoulder db (mm)65.0
Housing shoulder Da (mm)93.0
Housing shoulder Db (mm)89.0
Cage projection Aa (mm)1.1
Cage projection Ab (mm)2.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
427,0001023,386
618,00039213,083
813,5001,02434,133
1010,8002,15471,814
157,2008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 108,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandTimken
Source catalogueTimken Tapered Roller Bearing Catalog (2016)
Catalogue pagep.218 (dimensions)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
389/382TimkenTapered Roller55.5898.4221.95-0.65
389/382ATimkenTapered Roller55.5896.8421.95108 kN0.61
389/384EDTimkenTapered Roller55.5810049.2188 kN1.45

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
28680/28621TimkenTapered Roller55.5696.8424.61-0.74
28680/28622TimkenTapered Roller55.5697.6324.61123 kN0.75
389DE/382ATimkenTapered Roller55.5696.8453.19158 kN2.05
466-S/452TimkenTapered Roller55.56107.9529.32-1.24
466-S/452DTimkenTapered Roller55.56107.9565.09280 kN2.55
466-S/453ATimkenTapered Roller55.56107.9529.32161 kN1.13
466-S/453ASTimkenTapered Roller55.56107.9529.32161 kN1.13
5566/5520TimkenTapered Roller55.56120.2543.76-2.46

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